66163029504 has 960 divisors, whose sum is σ = 232917949440. Its totient is φ = 16460021760.

The previous prime is 66163029497. The next prime is 66163029529. The reversal of 66163029504 is 40592036166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1407724009 + ... + 1407724055.

It is an arithmetic number, because the mean of its divisors is an integer number (242622864).

Almost surely, 2^66163029504 is an apocalyptic number.

66163029504 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66163029504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116458974720).

66163029504 is an abundant number, since it is smaller than the sum of its proper divisors (166754919936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66163029504 is a wasteful number, since it uses less digits than its factorization.

66163029504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The spelling of 66163029504 in words is "sixty-six billion, one hundred sixty-three million, twenty-nine thousand, five hundred four".